I plan too once she (i plan on getting a female) outgrows this tank. I might even go tub systems... But who knows time will tell =). I'm leading towards tubs as they are cheap hold humidity well and i can make a custom rack which would be a really fun project! =) The premade cages i have heard good things about them and I've heard horror stories from them.

Two downsides that i hear aquariums and custom cages share are that they tend to be annoying to clean. As a tub you can just plop it in the bath tub and scrub away if need be!

I know though that pre-made and and tubs both hold humidity great! Although tubs can be an eye sore... you know what the well being of the snake comes first to me if i want to see my snake i'll pop off the lid =P. This enclosure is stored in my room so its not like i need a 360 visual to show it off to anyone. =).

I must say though the pre-made cages are affective and look nice